// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <gtest/gtest.h>
#include <pollux/testing/gtest_utils.h>
#include <pollux/common/encode/coding.h>
#include <pollux/type/huge_int.h>

namespace kumo::pollux::encode::test {

class ZigZagTest : public ::testing::Test {};

TEST_F(ZigZagTest, hugeInt) {
  auto assertZigZag = [](int128_t value) {
    auto encoded = ZigZag::encodeInt128(value);
    auto decoded = ZigZag::decode(encoded);
    EXPECT_EQ(value, decoded);
  };

  assertZigZag(0);
  assertZigZag(HugeInt::parse("1234567890123456789"));
  assertZigZag(HugeInt::parse("-1234567890123456789"));
  assertZigZag(HugeInt::parse(std::string(38, '9')));
  assertZigZag(std::numeric_limits<__int128_t>::max());
  assertZigZag(std::numeric_limits<__int128_t>::min());
}

} // namespace kumo::pollux::encode::test
